Finding the Fourth Proportional to 385,103.68, 531,467.60 and 215,337.76
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Solution
The fourth proportional to 385,103.68, 531,467.60 and 215,337.76 is: 297,179.82
Step by Step Solution
- Step 1: Write the proportion equation
385,103.68 : 531,467.60 = 215,337.76 : x - Step 2: Convert to fraction form
385,103.68/531,467.60 = 215,337.76/x - Step 3: Cross multiply
385,103.68x = 531,467.60 × 215,337.76 - Step 4: Simplify right side
385,103.68x = 114,445,042,496.58 - Step 5: Solve for x
x = 114,445,042,496.58/385,103.68 - Step 6: Final answer
x = 297,179.82
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.